ReturnTextPacket[string] is a MathLink packet containing string, the result of an EnterTextPacket evaluation.
RowAlignments is an option for the low-level function GridBox that specifies how entries in each row should be aligned.
ScriptBaselineShifts is an option for Style that specifies the minimum distance in x-heights to shift subscripts and superscripts.
ScriptMinSize is an option for Style that specifies the minimum font size to use in rendering subscripts, etc.
ShowPageBreaks is a notebook option that specifies whether to indicate in the on-screen display of a notebook where page breaks would occur if the notebook were printed.
StyleBoxAutoDelete is an option for selections that specifies whether a StyleBox wrapped around them should be automatically removed when the expression is edited.
TrueQ
(Built-in Mathematica Symbol) TrueQ[expr] yields True if expr is True, and yields False otherwise.
Visible
(Built-in Mathematica Symbol) Visible is a notebook option which specifies whether the notebook should be explicitly displayed on the screen.
WhittakerM[k, m, z] gives the Whittaker function M k, m (z).
WindowElements is a notebook option that specifies the elements to include in the window used to display the notebook on the screen.